Browsing by Title
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Buecher, Emmanuelle; Gibbons, Mark J. (NISC (Pty) Ltd and Taylor& Francis, 2003)[more][less]
Abstract: Diel vertical migration (DVM) of six common species of hydromedusae was investigated during two drogue studies conducted in St Helena Bay on the west coast of South Africa in February 1995. Clytia spp., Obelia spp. and Bougainvillia macloviana, were largely confined to surface waters and did not appear to display any DVM. By contrast, Leuckartiara octona and Euphysa aurata displayed clear DVM and, like Proboscidactyla menoni, were found at greater depths than the other species. The depth distribution and amplitude of migration varied between surveys for most species, so definitive interpretations of patterns could not be made. URI: http://hdl.handle.net/10566/377 Files in this item: 1
BuecherDielVerticalMigration2003.pdf (121.3Kb) -
Clarke, Dylan T.; Paterson, Gordon L. J.; Florence, Wayne K.; Gibbons, Mark J. (Iziko Museums of Cape Town, 2010)[more][less]
Abstract: A new species of Magelonidae, Magelona debeerei sp. nov., is described and illustrated from grab-samples collected at <100moff the southwest coast of Africa. Magelona debeerei sp. nov. has previously been identified from the region as M. papillicornis (Müller, 1858) by Day (1955, 1961, 1967) but differs from M. papillicornis sensu stricto by possessing dorsal medial lobes on chaetigers 4–8 and lateral pouches (Σ configuration) between chaetigers 10 and 11. Three species of Magelona have now been recorded from southern Africa (M. capensis Day, 1961, M. cincta Ehlers, 1908 and M. debeerei sp. nov.), and a key to Magelona from this region is provided. URI: http://hdl.handle.net/10566/245 Files in this item: 1
Clarke et al 2010.pdf (455.5Kb) -
Hart, Genevieve (Library and Information Association of South Africa, 2010)[more][less]
Abstract: The article reflects on a case study of a group of six school-based dual use libraries in rural South Africa – focusing specifically on their community role. Its starting point is the library and information services (LIS) Transformation Charter’s vision of public libraries that play a meaningful role in the attainment of the Millennium Development Goals. The study employed a mix of data gathering methodologies – interviews, observation and analysis of documents. The key question that emerges from the study relates to the rather low usage of the libraries by the adults in the surrounding villages. All six libraries claim to provide “access” but it is not clear what they provide access to. The study suggests that a sharper focus on their community information services is required. More leadership, staff education and focused programming might enable the libraries to fulfil their exciting potential. URI: http://hdl.handle.net/10566/250 Files in this item: 1
HartNewVision2010.pdf (192.3Kb) -
Pretorius, Joelien (Institute for Strategic Studies at the University of Pretoria, 2008)[more][less]
Abstract: The relevance of the Non-Aligned Movement has been in question since the end of Cold War bipolarity. In the post-Cold War order, whether interpreted as cosmopolitan, unipolar, multipolar or globalised in nature, there are still challenges to the main purpose of the Non-Aligned Movement, which can be defined as the pursuit of self-determination and development for so-called Third World states. The rise of China is impacting on the current world order, possibly returning it to a kind of bipolarity, which the Non-Aligned Movement members can exploit. In addition, the 'Beijing Consensus' may provide new terms on which developing countries can be integrated into the global economy in a way that would accommodate and encourage their development. URI: http://hdl.handle.net/10566/472 Files in this item: 1
PretoriusWorldorderChina2008.pdf (226.8Kb) -
Ah Tow, Lemese; Cowan, Donald A. (Society for General Microbiology, 2003)[more][less]
Abstract: Our results allow us to conclude that there appears to be significant conservation between the tuf genes of Planococcus, Planomicrobium and Staphylococcus spp., and that although the primer set TstaG422/TStag765 has been shown to possess high specificity, its use for the definitive identification of Staphylococcus spp. must be treated with some caution. Description: Published as a "Microbiology Comment": this provides a platform for readers of Microbiology to communicate their personal observations and opinions in a more informal way than through the submission of papers. URI: http://hdl.handle.net/10566/143 Files in this item: 1
AhTow&Cowan2003.PDF (251.5Kb) -
Chopra, Mickey; Kendall, Carl; Hill, Zelee; Schaay, Nikki; Nkonki, Lungiswa L.; Doherty, Tanya M. (Lippincott Williams & Wilkins, 2006)[more][less]
Abstract: Interviews conducted in South Africa found that awareness of antiretroviral therapy was generally poor. Antiretroviral drugs were not perceived as new, but one of many alternative therapies for HIV/AIDS. Respondents had more detailed knowledge of indications, effects and how to access alternative treatments, which is bolstered by the active promotion and legitimization of alternative treatments. Many expressed a lack of excitement about the introduction of antiretroviral therapy, and little change in their attitudes concerning the epidemic. URI: http://hdl.handle.net/10566/478 Files in this item: 1
ChopraARV2006.pdf (1.056Mb) -
Nasson, Bill (Stellenbosch University) (Published by History Dept, University of the Western Cape, 2009)[more][less]
Abstract: This review essay explores the racial and social divides that have permeated cricket in South Africa. URI: http://hdl.handle.net/10566/105 Files in this item: 1
NassonCricket2009.pdf (131.5Kb) -
Piper, Laurence (Unisa Press, 2011)[more][less]
Abstract: This article explores the significance of an important event, namely, the Pioneers of Participation workshop held in November 2009 in Cape Town, for public participation advocacy in South Africa. By tracing the shifting consciousness of one participant, a key provincial official (Jackie O whose name has been changed), the article shows both how such events can change mindsets to create better informed, better inspired and more connected advocates for public participation, and that this transformation is not necessarily permanent. Hence, it is argued that events like the Pioneers workshop are best located in a broader advocacy strategy appropriate to the particular context of state-society relations. In South Africa’s case it is argued that this strategy ought to focus on the twin objectives of policy reform – both to make formal participatory spaces more inclusive, democratic and empowered and to support the emergence of independent, popularly rooted yet technically competent civil society formations that are capable of mediating both popular needs and the policy system. How these objectives ought to be realised is an open question, but it is clear that events like the Pioneers workshop can be a galvanising and mindset changing resource in this broader strategy. URI: http://hdl.handle.net/10566/584 Files in this item: 1
PiperParticipation2011.pdf (1.131Mb) -
Raju, Reggie; Witbooi, Sally; Goosen, Annamarie (Library & Information Association of South Africa, 2012)[more][less]
Abstract: The road to acquiring statutory status for the Library and Information Services (LIS) sector in South Africa has been traversed numerous times over the last sixty to seventy years. In more recent years, there has been renewed vigour to explore the acquisition of statutory status for the sector in South Africa. As part of this process of acquiring statutory status, a number of studies have been conducted. This paper examines the latest drive by the Library and Information Association of South Africa (LIASA) to solicit the views of a cross section of LIS personnel with regard to the sector acquiring statutory status. This issue of the acquisition of statutory status is earmarked as a priority in the recently developed Strategic Directions 2010-2014 document of LIASA. At the 2009 LIASA Conference, a clear mandate was given for a national survey to be conducted to solicit the views of personnel that work in the LIS sector with regard to the said issue. The authors administered a short questionnaire to a sample population representing all categories of staff irrespective of whether they belonged to an association or not. The questionnaire was administered using Survey Monkey. This paper reports the results of that survey. Given the overwhelming support for the acquisition of statutory status, the authors examined significant elements that would need to be crafted into the governance structures of a statutory body for the sector. URI: http://hdl.handle.net/10566/557 Files in this item: 1
RajuStatutoryStatus2012.pdf (670.6Kb) -
Puoane, Thandi; Hughes, Gail; Bradley, Hazel A. (Kamla-Raj Enterprises, 2005)[more][less]
Abstract: Obesity and associated non-communicable diseases such as Type 2 diabetes, hypertension, and ischaemic heart disease were previously thought to be diseases of affluent countries, but they are becoming increasingly prevalent in developing nations. Accessibility to cheap unhealthy food, global trade and market development influence nutrition transition towards diets with high fat and sugar contents. A decrease in physical activity due to urbanisation and other environmental factors such as crime and violence are thought to lead to an increased risk of obesity. Positive beliefs about body weight among black African women, together with the idea of association of thinness with HIV/AIDS virus infection are believed to fuel the obesity epidemic amongst this population This paper describes some of the contributory factors which black South African women are faced with in making choices about healthy living. A multisectoral approach will be needed to fight the epidemic of obesity and associated diseases. URI: http://hdl.handle.net/10566/243 Files in this item: 1
PuoaneObesity2005.pdf (29.48Kb) -
Kruger, Salome H; Puoane, Thandi; Senekal, Marjanne; Van Der Merwe, Theresa M (Nutrition Society, 2005)[more][less]
Abstract: OBJECTIVES: To review data on the prevalence, causes and health consequences of obesity in South Africa and propose interventions to prevent and treat obesity and related outcomes. METHODS: Data from existing literature were reviewed with an emphasis on changing eating and activity patterns, cultural factors, perceptions and beliefs, urbanisation and globalisation. Results of studies on the health consequences of obesity in South Africans are also reviewed. RESULTS: Shifts in dietary intakes and activity patterns to higher fat intakes and lower physical activity are contributing to a higher prevalence of obesity. Few overweight black women view themselves as overweight, and some associate thinness with HIV/AIDS. Glucose and lipid toxicity, associated with insulin resistance, play roles in the pathogenesis of the co-morbid diseases of obesity. Elevated free fatty acids in the black population predispose obese black patients to type 2 diabetes. CONCLUSION & RECOMMENDATIONS: Obesity prevention and treatment should be based on education, behaviour change, political support, intersectoral collaboration and community participation, local actions, wide inclusion of the population, adequately resourced programmes, infiltration of existing initiatives, evidence-based planning, and proper monitoring and evaluation. Interventions should have the following components: reasonable weight goals, healthful eating, physical activity and behavioural change. Genes and mutations affecting susceptibility to the development of co-morbidities of obesity and vulnerable periods of life for the development of obesity should be prioritised. Prevention should be managed in community services, identification of high-risk patients in primary healthcare services and treatment of co-morbid diseases in hospital services. URI: http://hdl.handle.net/10566/285 Files in this item: 1
PuoaneObesityChallenges2005.pdf (160.4Kb) -
Puoane, Thandi; Steyn, Kristela; Bradshaw, Debbie; Laubscher, Ria; Fourie, Jean; Lambert, Vicki; Mbanangwa, Nolwazi (Nature Publishing Group, 2002)[more][less]
Abstract: To ascertain the anthropometric profile and determinants of obesity in South Africans who participated in the Demographic and Health Survey in 1998. RESEARCH METHODS AND PROCEDURES: A sample of 13,089 men and women (age, _15 years) were randomly selected and then stratified by province and urban and nonurban areas. Height, weight, mid-upper arm circumference, and waist and hip circumference were measured. Body mass index (BMI) was used as an indicator of obesity, and the waist/hip ratio (WHR) was used as an indicator of abdominal obesity. Multivariate regression identified sociodemographic predictors of BMI and waist circumference in the data. RESULTS: Mean BMI values for men and women were 22.9 kg/m2 and 27.1 kg/m2, respectively. For men, 29.2% were overweight or obese (_25 kg/m2) and 9.2% had abdominal obesity (WHR _1.0), whereas 56.6% of women were overweight or obese and 42% had abdominal obesity (WHR _0.85). Underweight (BMI _18.5 kg/m2) was found in 12.2% of men and 5.6% of women. For men, 19% of the variation of BMI and 34% of the variation in waist circumference could be explained by age, level of education, population group, and area of residence. For women, these variables explained 16% of the variation of BMI and 24% of the variation in waist circumference. Obesity increased with age, and higher levels of obesity were found in urban African women. DISCUSSION: Overnutrition is prevalent among adult South Africans, particularly women. Determinants of overnutrition include age, level of education, ethnicity, and area of residence. URI: http://hdl.handle.net/10566/291 Files in this item: 1
PuoaneSurvey2002.pdf (63.15Kb) -
Gibbons, Mark J. (NISC (Pty) Ltd and Taylor& Francis, 1995)[more][less]
Abstract: A total of 24 species of euphausiid was collected during a survey along the South African south coast during January 1992. Communities over the Agulhas Bank were of low diversity and abundance and were dominated by Nycliphanes capensis. Those at the shelf-edge were of high diversity and abundance and were dominated by Euphausia recurI'll and Thysalloessa gregaria. Such high diversity may be maintained by vertical scgregation at night. Few species displayed obvious diel vertical migration, although N. capen sis may be able to maintain itself on the shelf by means of this behaviour. E. recurl'Cl appeared to feed on phytoplankton throughout the water column at night, reflecting the distribution of food. URI: http://hdl.handle.net/10566/374 Files in this item: 1
GibbonsEuphausiid1995.pdf (584.2Kb) -
Gibbons, Mark J.; Buecher, Emmanuelle; Thibault-Botha, Delphine (NISC (Pty) Ltd and Taylor& Francis, 2003)[more][less]
Abstract: The vertical distribution, abundance and size composition of a population of Pleurobrachia pileus was studied during a six-day drogue study conducted off the west coast of South Africa in February 1995. The population was centred in deep water, possibly because of the presence of a potential predator, Beroe sp., at shallower depths. The population of P. pileus failed to display clear patterns of migration, although nocturnal recruitment from deeper water resulted in a deepening of the depth of occupation then. The population was dominated by individuals <4 mm polar diameter, and large animals were confined to the upper water layers. These results are discussed with reference to possible spawning activities. Using published equations relating size to clearance rates, it was estimated that the population could remove up to 27% of integrated mesozooplankton standing stocks, and in excess of 100% (293%) at some depths. URI: http://hdl.handle.net/10566/373 Files in this item: 1
GibbonsPleurobrachia2003.pdf (270.1Kb) -
Barange, M; Macpherson, E; Gibbons, Mark J. (NISC and Taylor & Francis, 1994)[more][less]
Abstract: Information on vertical and horizontal distribution patterns, abundance and morphology of the decapod Pasiphaea semispinosa in the Benguela upwelling system is presented. P. semispinosa is the dominant pelagic decapod in the system, occurring between 19 and 32°S along the mid and inner shelf in concentrations of 10-100•m-2• Although it is more abundant during abated than during active upwelling in the northern Benguela, it would appear to be equally abundant during both upwelling scenarios in the southern Benguela. In the southern Benguela, reproductive females are present during winter and juveniles dominate during active upwelling, but juveniles appear to be more common during abated upwelling in the northern Benguela. The estimates of abundance of P. semispinosa presented in this study are subject to sampling biases attributable to their vertical migratory behaviour and net avoidance capabilities. URI: http://hdl.handle.net/10566/307 Files in this item: 1
GibbonsPasiphaea1994.pdf (692.3Kb) -
Tucker, William D.; Blake, Edwin H.; Marsden, Gary (Telkom, 2004)[more][less]
Abstract: We looked for and found two situations within the South African Digital Divide where constant and severe macro-scale latencies would most likely interfere with the usage of Information and Communication Technology (ICT) solutions. We describe how these systems tend to exhibit both social and technical macro-scale delays. Our experience building bridges for these communities has inspired several innovations with respect to the design, development and measurement of IP communications systems. The main contribution is the Open User Interconnect (OUI) stack, a communications system model that explicitly includes the user in relation to the underlying network. The OUI stack is orthogonal to the Open System Interconnect stack. There are two outcomes from including the user in the model. First, the OUI approach necessitates the adoption of usercentred methods such as Participatory Design and in the case of the South African Digital Divide, the adoption of Action Research principles. The second outcome is a user-centred measurement notion, called Quality of Communication (QoC), that is a macro-scale spin on Quality of Service. QoC explicitly includes the measurement of user behaviour in addition to system metrics. In conclusion, we suggest that these Digital Divide-inspired contributions may be applicable to IP communications system design, development and measurement in general. The paper concludes with a brief dissertation completion plan. URI: http://hdl.handle.net/10566/485 Files in this item: 1
TuckerDigitalDivide2004.pdf (131.4Kb) -
Hudson, Athol; Grobler, Sias; Harris, Angela (Master Publishing Group, 2011)[more][less]
Abstract: The purpose of the study was to assess the relative base designs of three different maxillary molar stainless steel brackets with reference to the shear bond strength of three different adhesive resins. The molar brackets used were Victory series (3M Unitek), Upper Molar (GAC) and Optimesh XRT (Ormco). The adhesives used were Transbond XT (3M Unitek), Enlight (Ormco) and Sure Ortho Light Bond (Sure Orthodontics). The human enamel specimens (144) were randomly divided into nine groups and each group (n=16) was allocated to a bracket/adhesive combination. The contact surface of each of the bracket bases was measured three dimensionally using a reflex microscope. The base designs were also subjected to further microscopic investigations. The brackets were bonded to the enamel, temperature cycled and the shear bond strength was measured. The size and design of each of the brackets was different. The base size, surface treatment, mesh strand diameter and aperture size of the bracket base mesh have a significant effect on the shear bond strength at the bracket/adhesive interface. The shear bond strengths of all three Ormco bracket/adhesive resin combinations (5.8-6.8 MPa) were significantly lower (p<0.05; Kruskal-Wallis) than the other six bracket/adhesive combinations (9.4-12.1 MPa). The different adhesive types (3 types) could not be mainly responsible for the low shear bond values found for the Ormco bracket. The 3M Unitek combination of the Victory series bracket and Transbond XT adhesive proved to have a high shear bond strength without enamel damage. URI: http://hdl.handle.net/10566/558 Files in this item: 1
HudsonOrthodonticMolarBrackets2011.pdf (1.831Mb) -
Igumbor, Ehimario U.; Puoane, Thandi; Gansky, Stuart A.; Plesh, Octavia (South Africa Academy of Family Physicians, 2012)[more][less]
Abstract: Background: The burden of pain in primary care has not been described for South Africa. This study aimed to determine the prevalence of pain in primary care and to characterise pain among adult patients attending a rural and a periurban clinic in the Eastern Cape (EC) Province. Method: cross-sectional descriptive survey was conducted among adult patients attending a rural and periurban clinic over four days. Consecutive patients were asked whether they were in the clinic because of pain and whether the pain was the major reason for their visit. Pain was characterised using an adaptation of the Brief Pain Inventory and the Pain Disability Index. The prevalence percentage and the 95% confidence interval (CI) of pain were estimated, and the relationship with demographic variables was determined at a significance level of P < 0.05. Results: Seven hundred and ninety-six adult patients were interviewed, representing a response rate of 97.4%. Almost three-quarters (74.6%; 95% CI: 63.2-81.4%) reported visiting the clinic because of pain. Pain was the primary reason for 393 (49.4%; 95% CI: 32.1-61.0%) visits and was secondary in 201 (25.3%; 95% CI: 12.8-33.7%) visits. The common sites of pain were the head, back and chest. The median pain score was eight on a scale of 0-10 (interquartile range: 6-8). Respondents experienced limitations in a number of activities of daily living as a result of pain. Conclusion: Pain is a central problem in public primary care settings in the EC Province and must therefore be a priority area for primary care research. Strategies are needed to develop to improve pain management at primary care level in the province. URI: http://hdl.handle.net/10566/428 Files in this item: 1
IgumborPeriurbanHealthClinic2012.pdf (197.4Kb) -
Albertus, Chesne (Juta Law, 2012)[more][less]
Abstract: ‘We ought to give those who are to leave life … the terminally ill … the same care and attention that we give those who enter life – the new-born.’1 In this article it is contended that terminally ill inmates have a right to palliative care and that the State has a duty to fulfil this right. The number of unsuccessful medical parole applications and recorded natural deaths of inmates is considered as indicative of the problem of terminally ill inmates in South African prisons. It is further contended that the State’s obligation arises from an inmate’s constitutional right to health care and from an increasingly recognised international human right to palliative care. URI: http://hdl.handle.net/10566/410 Files in this item: 1
AlbertusHealthCareInmates2012.pdf (212.2Kb) -
Baker, Gillian; Ah Tow, Lemese; Cowan, Donald A. (Elsevier, 2003)[more][less]
Abstract: PCR-based technologies are widely employed for the detection of specific microorganisms, and may be applied to the identification of non-indigenous microorganisms in ‘pristine’ environments. For ‘pristine’ environments such as those found on the Antarctic continent, the application of these methods to the assessment of environmental contamination from human activities must be treated with caution. Issues such as the possibility of non-human dispersal of organisms, stability and survival of non-indigenous organisms in vivo, the sensitivity, reproducibility and specificity of the PCR process (and particularly primer design) and the sampling regime employed must all be considered in detail. We conclude that despite these limitations, PCR and related technologies offer enormous scope for assessment of both natural and non-indigenous microbial distributions. URI: http://hdl.handle.net/10566/149 Files in this item: 1
BakerPCRdetection2003.pdf (391.8Kb)